MFS® Inflation-Adjusted Bond Portfolio

Fund Overview


Seeks total return that exceeds the rate of inflation over the long-term, with an emphasis on current income, but also considering capital appreciation.

Key Differentiators

  • Invests in inflation-protected U.S. Treasury securities and government agencies as well as other entities
  • Looks to add value through duration and yield curve management


Fund Information

$10.30 DAILY NAV AS OF 4/21/17
86664T359 CUSIP
$340 M NET ASSETS AS OF 3/31/17
Net Asset Value (NAV)
As of 4/21/17
NAV Change
$ -0.01  | -0.1%
Class Inception
Net Assets ($M)
As of 3/31/17
Average Effective Maturity
As of 3/31/17
14.03 yrs
Average Effective Duration
As of 3/31/17
9.32 yrs
Gross Expense ratio
0.56 %
Net Expense ratio
0.56 %

Gross Expense Ratio is the fund's total operating expense ratio from the fund's most recent prospectus.

Net Expense Ratio reflects the reduction of expenses from fee waivers, reimbursements, and the exclusion of interest and fees. Elimination of these reductions will result in higher expenses and lower performance.

Top 10 Holdings Details

As of 3/31/17

Canadian Government Real Return Bond 4.25% DEC 01 26
US Treasury Inflation Indexed Bonds 0.625% JUL 15 21
US Treasury Inflation Indexed Bonds 2.375% JAN 15 25
Japanese Government CPI Linked Bond 0.1% MAR 10 26
US Treasury Inflation Indexed Bonds 0.125% APR 15 19
US Treasury Inflation Indexed Bonds 0.625% JAN 15 26
Japanese Government CPI Linked Bond 1.3% SEP 10 17
US Treasury Inflation Indexed Bonds 0.125% APR 15 20
US Treasury Inflation Indexed Bonds 0.25% JAN 15 25
US Treasury Inflation Indexed Bonds 0.125% JAN 15 23

21.97% of total net assets

Total number of holdings: 102

Full and Historical Holdings

The portfolio is actively managed, and current holdings may be different.

Average Annual Total Returns % Details

These results represent the percent change in net asset value.

As of 3/31/17 (YTD Updated Daily, as of 4/21/17) As of 3/31/17

*YTD Updated Daily as of 4/21/17, subject to revision and not annualized.

Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value fluctuate so your units, when sold, may be worth more or less than the original cost; current performance may be lower or higher than quoted.

Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value fluctuate so your units, when sold, may be worth more or less than the original cost; current performance may be lower or higher than quoted.

Important Performance Information

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the portfolios' performance results would be less favorable. All results assume the reinvestment of dividends and capital gains. The performance is as of the date shown; it may not include the entire investment portfolio and is subject to change.

Initial Class shares have no sales charge.

The returns for the portfolio shown do not reflect the deduction of expenses associated with variable products, such as mortality and expense risk charges, separate account charges, and sales charges imposed by insurance company separate accounts. Such expenses would reduce the overall returns shown. Please refer to the variable product's annual report for performance that reflects the deduction of the fees and charges imposed by insurance company separate accounts.

Withdrawals of earnings or other taxable amounts are subject to income tax and, if made prior to age 59 1/2, may be subject to an additional 10% federal tax penalty. Early withdrawals reduce the death benefit.

Performance figures shown for periods before December 8, 2012, represent performance of the prior investment adviser and sub-adviser to the fund's predecessor under the previous investment strategies for the Fund.

No representation is made, and no assurance can be given, that any investment's results will be comparable to the investment results of any other product with similar investment objectives and policies, including products with the same investment professional or manager. Differences in portfolio size, investments held, contract and portfolio expenses, and other factors can be expected to affect performance.

Important Risk Considerations

  • The portfolio may not achieve its objective and/or you could lose money on your investment in the portfolio.

  • Investments in debt instruments may decline in value as the result of declines in the credit quality of the issuer, borrower, counterparty, or other entity responsible for payment, underlying collateral, or changes in economic, political, issuer-specific, or other conditions. Certain types of debt instruments can be more sensitive to these factors and therefore more volatile. In addition, debt instruments entail interest rate risk (as interest rates rise, prices usually fall), therefore the Fund's share price may decline during rising rates. Funds that consist of debt instruments with longer durations are generally more sensitive to a rise in interest rates than those with shorter durations. At times, and particularly during periods of market turmoil, all or a large portion of segments of the market may not have an active trading market. As a result, it may be difficult to value these investments and it may not be possible to sell a particular investment or type of investment at any particular time or at an acceptable price. The price of an instrument trading at a negative interest rate responds to interest rate changes like other debt instruments; however, an instrument purchased at a negative interest rate is expected to produce a negative return if held to maturity.

  • Investments in derivatives can be used to take both long and short positions, be highly volatile, involve leverage (which can magnify losses), and involve risks in addition to the risks of the underlying indicator(s) on which the derivative is based, such as counterparty and liquidity risk.

  • The portfolio's performance could be more volatile than the performance of more diversified portfolios.

  • Interest payments on inflation-adjusted debt instruments can be unpredictable and vary based on the level of inflation.

  • Please see the prospectus for further information on these and other risk considerations.

Product Insights


Average Effective Duration: Average Effective Duration is a measure of how much a bond’s price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a 5-year duration is likely to lose about 5.00% of its value.

Average Effective Maturity: Average effective maturity is a weighted average of maturity of the bonds held in a portfolio, taking into account any prepayments, puts, and adjustable coupons which may shorten the maturity. Longer-maturity funds are generally considered more interest-rate sensitive than shorter maturity funds.

Before purchasing any variable product, consider the objectives, risks, charges, and expenses associated with the underlying investment option(s) and those of the product itself. For a prospectus, or summary prospectus if available, containing this and other information, contact your investment or insurance professional. Read the prospectus carefully before investing.